Tine ionides



Sept. 29, 1925. 1,555,2i3

' A C. IONIDES JR FLUIDCONTROLLINGDEVICE Filed Nov. 2'7. 1922 PatentedSept. 29, 1925.

' UNITED STATES ALEXANDER coNs'rAn'rmE ronrnns, an, or LONDON, ENGLAND.

FLUID-CONTROLLING Dnvrcn.

Application filed November 27, 1922. Serial No. 603,719.

To all whom it may 00mm.-

Be it known that I, ALEXANDER CoNs'rAN- TINE IoNIDEs, Junior, a subjectof the King of Great Britain and Ireland, and residing at 3PorchesterTerrace, London, V. 2, England, have invented certain newand usefulImprovements in or Relating to Fluid-Controlling Devices, of which thefollowing is a specification.

This invention relates to fluid controlling devices of the type having amovable member such as a floating hell or other appliance which forms apartition between two com partments, each of which contains a valvewhich controls the entrance of fluid thereto, said valves beingsimultaneously actuated to perform opposite functions by the movement ofthe partition in such a man- .ner that a constant relationship ismaintained between the pressures of the fluids leaving the compartments.

To increase the sensitiveness of the controlexer'ted'by such devices,one portion of the necessary moving weights has been arranged to balanceanother portion but even this doesnot wholly obviate the use of certainadditional parts such as direction rcversing means, the weight of which,particularly in larger sized apparatus, contributes to the inertia ofthe total moving mass.

The object of the present invention is to remove the foregoingobjections and to pro .vide improved devices of the type indicated.

The .111V8Ilt1011 conslsts 1n a fluid con- I, trolling. device of thetype indioated,in

which the Vweight of the moving parts is balanced by a spring or otherresilient-appliance.

a The invention further consists in a fluid controlling device inaccordance with the preceding paragraph, and comprising in combinationan upright casing, a bell movable in a liquid seal or other movablepartition dividing said casing into. an upper and lower compartment, aninlet branchor conduit entering each compartment and each providedcoaxial with and connected to saidpartitionwith a pressure, balanced ordouble seated valve which controls the admission of a separate fluid toeach compartment, an outlet from each compartment permitting the exit offluid therefrom and a spring or other resilient appliance supportmg theweight of sald partition and the valves connected thereto and permittingmovement of the whole under the pressures acting upon the partition tomaintain within very narrow limits a. constant relation- Ship betweenthe pressures of the fluids leaving the compartments.

-The invention also consists in improvements in or relating to fluidcontrolling devices as hereinafter described. I

The accompanying drawing shows by Way of example a convenient embodimentof th invention taking the form of a ,vertical cylindrical casing whichis' divided into two compartments, a being the upper and b the lower.These are separated by means of amovable partitionin the form of a gashell 0 enclosed in an annular sealing tank d formedround the inside ofthe casing between the upper and the lower ends thereof.

The casing in the embodiment illustrated consists of three hollowcylindrical bodies,

6, f, g which are each flanged at both ends and bolted together insequence 6, f, g.

In the central cylinder of the three, a fourth hollow body ispositioned, thisbody taking the form of, an inverted cylindrical pan 11having a flange h the outside diameter of which is equal to the diameterof the casing flange and which may be fastened between the flanges ofthe lower and 7 middle cylinders f and g, as byweldingto one of theflanges, with the cylindrical portion h, of the pan extendingupwardwithin the middle cylinder, thus providing an .ment 6.

annular space which forms the liquid seal- The inverted cylindrical panh ma yg conform at its upper part to the interiorsurface of the gas bellc and thus form a means of support when the gas hell .0. is in itslowest position. central aperture [L2 is provided allowing the fluid inthe lower compartment 6 to have access to the underside of the gas hell0 for the purpose of actuating the same. When In the top of the pan avvin its highest position the top of the gas bell c coincidesapproximately with the flanges of the middle fand upper c of the threecylindrical bodies, and between these flanges a disc-shaped member its,the under surface of" which conforms to the upper surface of the gasbell 0, is inserted. This disc will form a stop for the bell in itsuppermost position and in common with the top of the inverted pan it itis provided with an aperture 71. which permits the fluid in the uppercompartment a to act upon the upper surface of the bell. The purpose ofthe positioning stops or discs h and h, for the upper and lower extremepositions of the bell is to provide a support and protection in theevent of the bell being accidentally subjected to any excessive fluidpressure which might damage the light thin material of which it ispreferably constructed.

The compartments a and b are provided with internal valve chambers 7':and is, suitably formed by inlet conduits penetrating the walls of thehollow cylinders e and g and extending sufliciently far enough into theinterior thereof to allow for valve apertures 70 70 and 70 k in the top:and bottom of each conduit being provided concentric with the axis ofthe movable bell 0.

A pressure balanced or double seated valve 70 for the air is provided inthe valve chamber k and a corresponding valve 70 of suitable dimensionsfor the gas is provided in the casing 70,, each valve having two' discswhich may be of equal or substantially equal size as shown at lo 70' forthe air valve and at 76, 70 for the gas valve, the a relationshipbetween the diameters of the air and gas valves depending upon the kindof gas employed.

The double seated valve k fitted in the upper or air Valve chamber 7: isadapted to close or shut ofi when moved in a downward direction and thedouble seated valve 70 in the lower or gas valve chamber 70, will shutoff or close when caused to move in the upward direction.

A central rod Z coinciding with the axis of the casing and concentricwith the valve apertures and the gas bell is connected to the lowerdouble seated valve, the gas bell and the upper double seated valve, theconnection being conveniently of a type adaptable to adjustment so thatboth the valves and the bell may be adjusted to function correctly withtheir co-operating parts, such as the apertures 70 and 72 and the tank(1.

. The rod Z which carries the valves and the gas bell is preferablyguided tor vertical movement at the bottom by means of a guide piece mwhich is securely fastened to the bottom cover Q1 of the casing. It alsopasses through a guide m, at the top of the casing which may be heldpositioned by supports (no-t shown) which may project from the sides ofthe casing. The end of the central rod projects above the top guide, asshown.

A concentric extension 79 of conveniently reduced cross-sectionaldimensions is con- The central member '2" passes through the cover p ofthe extension 2 and the projecting part is screw-threaded and providedwith a readily turnable nut or hand-wheel m by means of which thecentral member 1" may be raised or lowered to effect any necessaryadjustment.

The helical spring m is designed so as to support the entire weight ofthe two valves and the bell when each of these elements is in thecentral posit-ion of its travel, and is designed to allow. movement ineither direction under variations of pressure so as to permit theclosing of onevalve and the full opening of the other, when moved ineither direction. The spring will be so proportioned that with a verysmall difference of pressure acting on the bell'it will permit thenecessary movement of the valves and as the moving weights are reducedto the double seated valves and the bell together with the centralconnecting member the inertia of the mass is reduced to a minimum andthe sensitiveness of the controllable device is correspondinglyincreased.

The valves and the bell may be of the lightest possible construction to.withstand the stresses to which they aresubjected and as previouslyexplained the stop or positioning discs which are provided on both sidesof the bell may be set closely, adjacent to its extreme positions so asto prevent the possibility of injury to it by the action of anyaccidental increase of pressure upon it.

Outlet openings n and a, are provided in the upper and lowercompartments of the device and to these are connected the mains or thelike which supply the two fluids to the appliances in which they areused. The device is particularly applicable to controlling the supply ofgas and airat substantially equal or constantly related pressures tocombustion appliances of the type'in which combustion takes place withina closed chamber under, a slight back pressure resulting. from thedischarge of the products of combustion to atmospheric pressure at alower level than the combustion region, thus ensuring the absence of anysuction eflect which mightvdraw in the surrounding air andcso alter therelation between the quantities of the constituents taking part in thecombustion reaction, such combustion appliances being also, ifdesirable, jacketed wit-h the hot products of combustion in order toprevent heat losses and also where required provided wit-h test flame orlike appliances for determining the proportions of the mixture bycombustion of a very small proportion thereof.

It is to be understood that the construction hereinbefore described isgiven by way of example and that modifications and additions may be madethereto without in any way departing from the spirit of this invention.

Having now described my invention, what I claim as new and desire tosecure. by Letters Patent is 1. A fluid-controlling device having incombination a movable partition, two doubleseated valves each one ofwhich regulates one of two separate fluids controlled by said device,means whereby each valve is connected directly to said movable partitionand when moving travels simultaneously an equal distance in the samedirection, and means for resiliently balancing the weight of the movingparts.

2. A fluid-controlling device having in combination a movable gas bell,two doubleseated valves each one of which regulates oneof two separatefluids controlled by said device, means connecting each valve directlyto said movable bell so as to move in unison therewith and a springdevice for resiliently balancing the weight of the moving parts.

3. A fluid-controlling device having in combination an upright casing, amovable partition dividing said easing into an upper and lowercompartment, an inlet branch entering each compartment, a double-seatedvalve controlling the admission of a separate fluid from each branch toeach compartment, means whereby each valve is connected directly to saidmovable partition and when moving travels simultaneously an equaldistance in the same direction, an outlet from each compartment and aresilient appliance supporting the weight of said partition and thevalves connected thereto and permitting movement of the whole under thepressures acting upon the partition.

4. A fluid-controlling device comprising in combination a casing, amovable partition forming an upper and a lower compartment therein, aconduit entering each compartment, an independent two-disc valve withthe pressure acting in an opposite direction on each disc to control thepassage of fluid from each conduit to its respective compartment, anoutlet from each compartment, means directly connecting each valve tosaid partition so as to move in unison therewith and a resilient devicesupporting all the moving parts.

5. A fluid controlling device having in combination an upright casing, abell movable 1n :1 liquid sea-l dividing said easing into an upper andlower compartment, a conduit entering each compartment, a double-seatedvalve controlling the admission of a separate fluid from each conduit toeach compartment, means whereby each valve is connected directly to saidmovable bell and when moving travels simultaneously an equal distance inthe same direction, an outlet from each compartment and a springsupporting the weight of said bell and the valves connected thereto andpermitting movement of the whole under the pressure-s acting upon theopposite sides of the top of said bell.

In testimony whereof I have signed my name to this specification.

ALEXANDER CONSTANTINE IONIDES (Junior).

